steve is live in washington, dc, with more on that. steve, what is the basic argument overwhelm in the military? >> and say women are not strong justify for combat roles and others say women have proven themselves time and time again on the frontlines. in any case, it is official, women will be able to serve alongside men on the front lines opening up doors to further advancement along the military chain of command. outgoing defense secretary panetta signing the order but many stray is a question of physical capability. >> ing the evidence is is clear combat effectiveness, when women are put in those kind of demanding roles, they breakdown, there is a difference in the physician -- physicalness of men and women. olympic athletes compete by gender not each other. >> women have been serving in certain combat roles for years in iraq and afghanistan. >>heather: so, what do supporters say? >> say they there are no issues resulting from women in combat. and say that women bring very valuable qualities to the battlefield. listen. about only l